RadioShack
US:RSH
tumbled 17% to $2.25 after the struggling electronics retailer fell well short of Wall Street expectations for earnings and said it would close about a fifth of its stores, raising fears that it may not survive. The company said lower store traffic, intense discounting, and operational issues were responsible for the drop, but that the company’s turnaround is still moving forward.

J.C. Penney
JCP, -0.52%
shares climbed 4.2%. Standard & Poor’s late Monday hiked its outlook on the retailer’s rating to stable from negative. “The outlook revision reflects our view that performance has begun to stabilize and we forecast further modest gains over the next year,” said S&P credit analyst David Kuntz.

Gainers

Chipotle Mexican Grill Inc.
CMG, +1.07%
shares rose 5.5%. The gourmet burrito chain said Monday that it reached a deal to be the official fast-casual restaurant for Major League Soccer.

Zynga Inc.
ZNGA, -0.28%
leapt 7.8%. Chief Executive Don Mattrick said the online-gaming company plans to launch pilot programs for a real-money poker game in various parts of the world later this year and announced new mobile versions of “Words With Friends,” “Zynga Poker” and “FarmVille” titles at a tech conference.

Symantec Corp.
SYMC, +0.32%
shares lost 1.8%. The software company on Monday said it appointed Thomas Seifert as chief financial officer, effective March 17.

Tickers to Watch

TSLA: Tesla Motors Inc.
TSLA, -0.44%
shares rose 2.4%. The electric-car company on Tuesday announced expansion plans in Europe. In addition, Adam Jonas, an analyst at Morgan Stanley, said Tesla could disrupt the energy industry if its Gigafactory can produce batteries at a cost that is low enough. Morgan Stanley has an overweight rating and a price target of $320 on Tesla shares. Shares have surged nearly 67% this year through Monday’s close.

AAPL: Apple Inc.
AAPL, -0.45%
shares climbed 0.7%. The iPhone maker said Tuesday that Chief Financial Officer Peter Oppenheimer will retire at the end of September. He will be replaced by Luca Maestri, currently vice president of finance and corporate controller.

LO: Lorillard Inc.
US:LO
rose 3.1% in the wake of a Financial Times report that Reynolds American Inc.
US:RAI
maker of Camel brand cigarettes, is exploring a possible buyout of Lorillard in a deal that could value Lorillard at more than $20 billion. Shares of Reynolds were up 5.7%.

Intraday Data provided by SIX Financial Information and subject to terms of use. Historical and current end-of-day data provided by SIX Financial Information. All quotes are in local exchange time. Real-time last sale data for U.S. stock quotes reflect trades reported through Nasdaq only. Intraday data delayed at least 15 minutes or per exchange requirements.